Sash-hinge



(NO MOM) H. M. PITMAN.

SASH HINGE.

No. 599,251. Patented Feb. 15, 1898. 1211;

gym

W'ftnesses w: cams PETERb co, FHOTO-LITHD WASHINGTON u r llrvrrn Frames ATIENT Cation.

HARRY M. PITMAN, OF SAN FRANCISCO, CALIFORNIA.

SASH HENGE.

SPECIFICATION forming part of Letters Patent No. 599,251, dated February 15, 1898.

Application filed March 9, 189 '7.

To aZZ whom it may concern:

Be it known that I, HARRY M. PITMAN, a citizen of the United States, residing at San Francisco, in the county of San Francisco, State of California, have in vented a new and useful Improvement in Sash Pivots or Hangers, of which the following is a specification.

My invention relates to improvements in devices for pivoting and supporting Windowsash so they can be swung inward into aroom and thus be accessible for cleaning without the danger attendant upon cleaning on the outside of a building or when the sash is in place.

My invention consists in improved devices to be inserted in the sash and in the windowjambs that interlock and form a pivotal support on which the sash can be swung inward, as will hereinafter be fully explained in connection with the accompanying drawings, forming a part of this specification.

Figure I shows a window provided with my improvements. Fig. II is an enlarged crosssection on the lineman, Fig. I. Fig. III shows an escutcheon or plate such as is fitted in the window-jamb. Fig. IV is a view of a complete pivot for inner or lower sash, the jamb-escutcheon and socket being in section. Fig.V is a view at a right angle of Fig. IV. Fig. VI is a plan view of Fig. IV. Fig. VII is afront view of one of the escutcheons for the sash. Fig.VIII is a front and complete view of one of the pivots for the upper sash. Fig.1X is a view at a right angle of Fig. VIII. Fig. X is a plan view of Fig. VIII. Fig. XI is a perspective View of Fig. III.

The objects of my invention are to provide improved pivot-fittings that are uniform and in part interchangeable of such form as to be applied at a trifling expense, the permanent or fixed parts being of circular form, the pintle-pins and eye-holes being tapered so as to engage without careful adjustment; to pro vide metallic supports for the removable pivots, and certain minor details hereinafter specified.

The first feature in my invention to be pointed out is that the sockets, consisting of a fiange 1 and a socket or shell 2, are all of circular form and fit into recesses in the sash and jambs that can be made with boringtools, and that by combining with a common Serial No. 626.605. (N0 model.)

boring bit a countersinking-cutter to form a recess for the flush plates 1 a window can be fitted with my improved devices in a few minutes time.

For common windows, such as have sash made of soft wood, I provide the plates or es cutcheons with shells 2, that are drilled or bored to fit the shanks 3 of the pintles 4=and the eyes 5, the projecting portion 6 being square and forming a shoulder at the corners against the escutcheons or plates 1.

The escutcheons or plates 1 on both the upper sash 7 and the lower sash 8 (shown in Fig. VII) are the same and have a complete circular contour; but those for the jambs (shown in Fig. III) are cut off at one side for clearance, as seen in Fig. II, in one case to clear the lower sash 8 and in the other case to clear the parting-strip 9 between the sash.

The pintles 4 and eyes 5 are uniform except as to length for the upper and lower sash 7 and 8 and for all the windows in a building, so that only one set, four in number, are required for each workman when cleaning the windows of a building.

To prevent the withdrawal of the pintles 1.

and the eyes 5 when in use, I provide looking lugs or pins 10, inserted in the shanks 3, and a notch 12 in the plates 1, that permits these pins 10 to pass through to the back when in a horizontal position. A slot 11, cut in the shells 2, permits the pins 10 to be turned to a vertical position, securing the shanks 3 from being withdrawn, and also forms a stop for the pintles a1. and eyes 5 when these are vertical and in position to engage.

The method of operatingis indicated in Fig. II, where the sash 7 and 8 are swung on the pivots. The lower sash 8 is first raised, as indicated by the dotted lines 13, the plates or escutcheons 1 being then in the position indicated by dotted lines at 14 in Fig. I. The pintles 4. and eyes 5 are then inserted, as seen in Fig. II, and the sash 8 lowered until it rests on the pivots and can be swung out to a position convenient for cleaning. For the upper sash 7' the jalnb escutcheons or plates 1 are set at some distance below those in the sash and the sash lowered until the pivots engage.

Having thus described the nature and objects of my invention, what I claim is The herein described improvements in sash-pivots, consisting of the cylindrical insertible socket 2 having escutcheon-plate 1, and provided with quadrantal slot 11 and notch 12, in combination with a pivot-pintle 4 having a cylindrical shank, a square shoulder, and locking-lug l0, and a pintle-eye 5 having cylindrical shank, square shoulder, and locking-lug, adapted to engage with a corresponding socket inserted into the sash, sub- I0 stantially as shown and described.

In testimony whereof I have hereunto affixed my signature in the presence of two Wit nesses.

HARRY M. PITMAN.

Witnesses:

K. LocKWooD-NEvINs, H. SANDERSON. 

